No mention of correctness or task success rate. This only works if the subagent model is much cheaper than the one running your session, which means it will probably be mistaken a lot more often [1] about what the code does. Routing purely on size tells you nothing about code complexity.
On top of that, saving 90% of input tokens != saving 90% "of tokens", output is wildly more expensive.
[1] especially if it's a really old model like Gemini 2.5!
On top of that, saving 90% of input tokens != saving 90% "of tokens", output is wildly more expensive.
[1] especially if it's a really old model like Gemini 2.5!